Hi, I have an 88 reliant and I am almost experiencing what you are going
thru. My 2.5 liter 4 cyclinder has about 300 000 plus kilometers on it,
and I do have aslight power problem with starting and idoling. it tends to
want to stall and idol very roughly, even though its fuel injected,
something is not right... Ii replaced all spark plugs wires cap and rotor
and yet its been almost a year since I replaced it entirely, it still runs
roughly in both warm and cold temps. I think my problem may be coolant
related. have a leaky radiator and leak about 2 liters of water every 2nd
day i have to refill it, that is when it really loses power and becomes
sluggish in acceleration when water is low. Not sure if this is of any
help to you so thought i may run this issue by you.